Steering device of vehicle

Abstract

According to the present embodiments, it is possible to rapidly perform an operation of storing and withdrawing a steering wheel for securing a space in a driver's seat, and strengthen the rigidity of, and easily adjust, the operation of the steering column for storing and withdrawing the steering wheel.

What is claimed: 
     
         1 . A steering device of a vehicle, comprising:
 an upper tube receiving a steering shaft;   a lower tube receiving the upper tube;   a movable bracket to which the lower tube is coupled;   a fixed bracket fixed to a vehicle body, having the movable bracket slidably coupled thereto, provided with a pressing member pressing the movable bracket, and configured such that a pressing force provided to the movable bracket by the pressing member is adjustable;   a first driver for sliding the upper tube with respect to the lower tube; and   a second driver for sliding the movable bracket with respect to the fixed bracket.   
     
     
         2 . The steering device of  claim 1 , wherein the first driver includes a nut coupled to the upper tube, a screw engaged with the nut, and a motor coupled to the lower tube to rotate the screw. 
     
     
         3 . The steering device of  claim 2 , wherein the first driver further includes a reducer connecting the screw and the motor. 
     
     
         4 . The steering device of  claim 2 , wherein the nut is coupled to the upper tube through an impact load absorber including a bending plate. 
     
     
         5 . The steering device of  claim 4 , wherein a stopper axially overlapping the impact load absorber is provided on an outer circumferential surface of the upper tube. 
     
     
         6 . The steering device of  claim 5 , wherein the lower tube has a guide recess opened to two axially opposite sides to receive the stopper. 
     
     
         7 . The steering device of  claim 6 , wherein the upper tube includes a plurality of coupling parts to which the stopper may be coupled and which are axially spaced apart from each other. 
     
     
         8 . The steering device of  claim 1 , wherein the second driver includes a nut coupled to the fixed bracket, a screw engaged with the nut, and a motor coupled to the movable bracket to rotate the screw. 
     
     
         9 . The steering device of  claim 8 , wherein the second driver further includes a reducer connecting the screw and the motor. 
     
     
         10 . The steering device of  claim 1 , further comprising:
 a tilt bracket rotatably coupled to each of the fixed bracket and the movable bracket; and   a third driver for rotating the tilt bracket.   
     
     
         11 . The steering device of  claim 10 , wherein the third driver includes a nut coupled to the tilt bracket, a screw engaged with the nut, and a motor coupled to the lower tube to rotate the screw. 
     
     
         12 . A steering device of a vehicle, comprising:
 an upper tube receiving a steering shaft;   a lower tube receiving the upper tube;   a movable bracket to which the lower tube is coupled;   a fixed bracket fixed to a vehicle body, opening to two axially opposite sides, and including a receiving part receiving the movable bracket and a pair of plate parts supported on two widthwise opposite side surfaces of the movable bracket, each of the plate parts provided with a pressing member supported on the movable bracket in a width direction;   a first driver for sliding the upper tube with respect to the lower tube; and   a second driver for sliding the movable bracket with respect to the fixed bracket.   
     
     
         13 . The steering device of  claim 12 , wherein a rail recess is formed in an inner surface of the plate part along an axial direction, and wherein a guide protrusion inserted into the rail recess is formed on the two widthwise opposite side surfaces of the movable bracket. 
     
     
         14 . The steering device of  claim 12 , wherein a coupling hole penetrating the plate parts in the width direction is formed in the plate parts, and wherein the pressing member is inserted into the coupling hole and has an end portion supported by the movable bracket. 
     
     
         15 . The steering device of  claim 14 , wherein rail grooves are formed in inner surfaces of the plate parts along an axial direction, and two widthwise opposite side surfaces of the movable bracket are inserted into the rail grooves, and
 wherein the coupling hole is formed to pass through a portion in which the rail groove is formed, and an end portion of the pressing member is supported by the guide protrusion.   
     
     
         16 . The steering device of  claim 14 , wherein a plurality of coupling holes are spaced apart from each other in an axial direction, and wherein the pressing member is inserted into each of the plurality of coupling holes. 
     
     
         17 . The steering device of  claim 14 , wherein the pressing member includes a support member supported by the movable bracket, a coupling member coupled to the fixed bracket, and an elastic member elastically supporting the support member with respect to the coupling member. 
     
     
         18 . The steering device of  claim 17 , wherein the coupling member is screwed to the fixed bracket. 
     
     
         19 . The steering device of  claim 18 , wherein a seating groove is formed in the movable bracket along an axial direction, and wherein a guide pin supported by the support member is seated in the seating groove. 
     
     
         20 . The steering device of  claim 19 , wherein a pair of seating grooves vertically spaced apart from each other are provided, and wherein the guide pin is seated in each of the seating grooves.